Improvement in shaft-couplings



1-1. 0. HUNTER &J-EV1ERDI G1 Shaft-Coupling.

No. 203,156 Patented A il so, I878.

UN TE rim". ohm-on.

HENRY c. HUNTER AND JOHN EvEEfDINe, OFQPEILA ELPHIA, PA.; sAI'n HUNTER ASSIGNOR 'jr'o ABRAHAM s. JEN-KS, or SAME PLACE.

IMPROVEMENT IN SHAFT-COUPLINGS.

Specification forming part of Letters Patent No. 203,156, dated April 30, 1878 application filed January 25, 1878.

To all whom it may concern.-

Be it known that we, HENRY (LHUNTER and JOHN EVERDING, both of the city and, county of Philadelphia, in the State of Pennsylvania, have jointly invented certain new and useful Improvements in Shaft-Couplings, of which the following is a specification:

The object of our invention is to provide simple, durable, and efiicient means for transmitting rotary motion from one shaft to another by an end coupling or connection which willproperly admit of such transmission, whether the axes of the two shafts be in line with or inclined relatively to each other; to which end our improvements consist in the combination of a socket secured upon the end of one of the shafts to be connected, and having one or more recesses or pockets, and a corresponding number of pins secured upon the end of the other shaft, each. being fitted to and movablewithin a block which rests in one of the recesses of the socket, and has the capacity of movementtherein radially to a center within the axial line of the shaft to which the socket is secured, as hereinafter more fully set forth.

In the accompanying drawings, Figure 1 is a longitudinal central section through a shaftcoupling embodying our improvements; Fig. 2, a view, in elevation, of the same; Fig. 3, a transverse section at the line 00 w of Fig. 1; and Fig. 4, an end view, looking from the side of the shaft which carries the socket.

Our improvements are shown as applied to the end transmission of rotary motion from a shaft, A, to a shaft, 0, or vice versa, said shafts being normally in the same axial line, but having the capacity of variation therefrom, either in a vertical or in a horizontal plane, while in rotation.

A socket, B, is secured upon one end of the shaft A by a key, a, and has a series of recesses or pockets, b-in this instance four in numberformed within it, each of these recesses being perpendicular to the axis of the shaft, and, by preference, having its outer boundary a segment of a cylinder or sphere,

are united by bolts b the division being made to enable the pins and blocks to be introduced. p

A circular opening, I), is formed in the outer end of the socket, for the passage of the shaft A, its diameter exceeding that of the shaft proportionately to the greatest admitted degree of angularity of the two shafts.

Pins or studs 0 are formed upon or securedto the shaft 0 adjacent to its end, being perpendicular to the axis of the shaft, and corresponding in number and relative radial position to the recesses b. Each of the pins 0 is fitted centrally in a block, 0, which has the capacity of free movement on the pin as a center, and is of such width as to fit neatly within one 01: the recesses b, its outer surface being a segment of. a cylinder or sphere of slightly less radiusthan that of the recess, and its length less than that of the recess pro-' portionately to the greatest admitted angularity of the shafts.

In applying the coupling, the smaller section of the socket Bis slipped around the shaft 0 and the larger keyed to the shaft A, and, a block, 0, being placed on each of the pins 0, the blocks are inserted into the recesses of the larger section of the socket, and the two sections firmly bolted together.

When in operation, it will be seen that the torsional strain of transmission is sustained by the pins, blocks, and side walls of the recesses, and that angular movement of either or both shafts is permitted about the intersection'of the axes of the pins as a center.

It will be further obvious that either of the l ing the capacity of movement therein upon shafts Aor C may act immaterially as a driver pins radially secured upon the end. of another or a driven shaft. shaft, the combination being and operating as We claim as our invention and desire to seand for the purpose set forth.

cure by Letters Patent HENRY, G. HUNTER. The combination, in a shaft-coupling, of a JOHN EVERDING.

socket secured upon a shaft, and having one Witnesses:

or more recesses radial to the axis thereof, J. SNOWDEN BELL,

and blocks fitting into said. recesses, and hav- GEO. A. VAILLANT. 

